	整体	电子	机器设备、仪器仪表	医药、生物制品
	ROA	ROA	ROA	ROA
lev	−0.0265^**	−0.0542^*	−0.0285^*	0.00308
	(0.01)	(0.03)	(0.01)	(0.02)
tar	10.1^***	14.19^***	9.322^***	7.306^***
	(0.63)	(1.59)	(0.79)	(1.32)
con	10.1^***	0.0352	0.07888^***	0.161^***
	(0.63)	(0.03)	(0.01)	(0.03)
inc	0.0875^***	−0.0314	1.503^***	0.517
	(0.01)	(0.51)	(0.27)	(0.49)
YF1	07458^***	0.859^***	0.129	0.771^***
	(0.21)	(0.20)	(0.07)	(0.24)
YF2	0.0849^***	−0.087	−0.145^*	−0.187
	(0.11)	(0.06)	(0.06)	(0.16)
YF3	−0.059^***		−0.358^***	−4.121^**
	(0.05)		(0.06)	(0.13)
_cons	−0.198^***	−2.897	−7.581^***	−6.354
N	(0.04)	(2.41)	(1.12)	(4.26)
N	2025	395	1190	440